package idv.arthur.work;

import java.io.IOException;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.google.gson.Gson;

/**
 * Servlet implementation class DelMRitem
 */ 
public class QueryEnv extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    public QueryEnv() {
        super();
        // TODO Auto-generated constructor stub
    }
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    	doPost(request,response);
    }

	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		
		request.setCharacterEncoding("UTF-8");
		
		Widgets wid = new Widgets();
		Connection conn = null;
		PreparedStatement ps = null;
		ResultSet rs = null;
		String strSQL = "SELECT COUNT(*) FROM env";
		ResultTableSet resultTableSet = new ResultTableSet();
		String dataType = request.getParameter("getDataType");
		ArrayList<InfoStruc> infoStrucs = new ArrayList<InfoStruc>();
		
		String bss = "";
		String subSysId = request.getParameter("subSysId");
		
		int page = Integer.parseInt(request.getParameter("page"));
		int total_pages = 1;
		int count  = 0;
		int limit = Integer.parseInt(request.getParameter("rows"));
		
		try {
			conn = wid.getConn(true);	
			ps = conn.prepareStatement(strSQL);
			rs = ps.executeQuery();
			rs.next();
			count  = rs.getInt(1);
			
			if ( count  != 0 ) {
				
				if ("JSON".equalsIgnoreCase(dataType)) {
					bss = request.getParameter("bssId");
				} else {
					bss = "MBMS";
				}
				
				if (limit  < count) {
					total_pages = (count / limit)+1;	
				}
				
				strSQL = "SELECT t1.envid,t1.envname,t1.creator, t1.createdDateTime,t2.username FROM env t1,personnel t2 WHERE t1.creator=t2.userid AND t1.bssid=? AND t1.subsysid=?  ORDER BY subsysid ASC";
				ps = conn.prepareStatement(strSQL);
				ps.setString(1, bss);
				ps.setString(2,subSysId);
				rs = ps.executeQuery();
				ArrayList<Rows> rows = new ArrayList<Rows>();
				
				while ( rs.next() ) {
					String envid = rs.getString("envid");
					if ("JSON".equalsIgnoreCase(dataType)) {
						InfoStruc infoStruc = new InfoStruc();
						infoStruc.setId(rs.getString("envid"));
						infoStruc.setName(rs.getString("envname"));
						infoStrucs.add(infoStruc);
					} else if ("mapping".equalsIgnoreCase(dataType)) {
						Rows row = new Rows();
						row.setId(envid);
						String[] cell = new String[5];
						cell[1] = envid;
						cell[2] = rs.getString("envname");
						cell[3] = rs.getString("creator")+" ("+rs.getString("username")+")";
						cell[4] = String.valueOf(wid.changeTimeFormat(rs.getTimestamp("createdDateTime")));
						
						row.setCell(cell);
						rows.add(row);	
					} else {
						Rows row = new Rows();
						row.setId(envid);
						String[] cell = new String[4];
						cell[0] = envid;
						cell[1] = rs.getString("envname");
						cell[2] = rs.getString("creator")+" ("+rs.getString("username")+")";
						cell[3] = String.valueOf(wid.changeTimeFormat(rs.getTimestamp("createdDateTime")));
						
						row.setCell(cell);
						rows.add(row);	
					}
				}
				resultTableSet.setRows(rows);
				resultTableSet.setPage(String.valueOf(page));
				resultTableSet.setTotal(total_pages);
				resultTableSet.setRecords(String.valueOf(count));
				
			} else {
				page =0;
				total_pages=0;
				resultTableSet.setPage(String.valueOf(page));
				resultTableSet.setTotal(total_pages);
				resultTableSet.setRecords(String.valueOf(count));
			}
		} catch ( SQLException e) {
			System.out.println(wid.errProcess(e));
		} finally {
			try {
				if (rs != null) {rs.close();}
				if (ps!= null) {ps.close();}
				if (conn!= null) {conn.close();}
			} catch (SQLException e) {
				System.out.println(wid.errProcess(e));
			}
		}
		
		response.setContentType("application/json");
		response.setCharacterEncoding("UTF-8");
		if ("JSON".equalsIgnoreCase(dataType)) {
			response.getWriter().write(new Gson().toJson(infoStrucs));
		} else {
			response.getWriter().write(new Gson().toJson(resultTableSet));	
		}
	}
}